Seneca

California wrote the book on ghost towns, from Gold Rush tent cities to Owens Valley farm towns the aqueduct dried up.

Seneca (formerly, North Fork) is an unincorporated community in Plumas County, California, United States. It lies at an elevation of 3625 feet (1105 m). Seneca is located on the North Fork Feather River, 6.25 miles (10.1 km) north of Twain. The Seneca post office opened in 1902, closed in 1918, reopened in 1923, moved in 1941, and closed finally in 1943. In 2013, the owners of the 12 acres comprising Seneca were offering it for sale, at a price of $225,000.

The on-the-ground condition of Seneca is unverified — it's listed here with unknown status. That could mean standing buildings, or an empty field. Go prepared for either, and consider sharing what you find so the record improves.

Nobody has confirmed the access situation, so treat any visit as reconnaissance: verify land ownership first, and be ready to admire from the road.

Here's the honest truth: access to Seneca is unverified. We couldn't confirm whether the site sits on public land, private property, or something in between — so verify land ownership and local rules before visiting, and respect private property at all times. The mapped point for Seneca is roughly 40.1106, -121.0847 — use it as a starting point and cross-reference a current topographic map before leaving pavement.

Ghost-town etiquette is simple: take only photographs. Removing artifacts is illegal on public lands and disrespectful everywhere else — and on federal land it can be a serious offense.